The HardyâWeinberg principle provides the solution to how variation is maintained in a population with Mendelian inheritance. According to this principle, the frequencies of alleles (variations in a gene) will remain constant in the absence of selection, mutation, migration and genetic drift.
Rxâd â A definition: A lot of new Crossfitters come in and ask âwhat does the Rxâd mean that everyone puts in their posts?â This is a very valid question and one that everyone should be thinking about. This post is to clearly define why one uses âRxâdâ. Rxâd simply means âas prescribedâ.
What is CXR Test? CXR test stands for chest X-ray, which refers to the picture of the chest area that displays the lungs, airway, heart, blood vessels, and lymph nodes. Additionally, the chest X-ray also displays the spine and other bones around the area, such as the ribs, breastbone, and the collarbone.